Calculating device



Apr. 17, 1923. 1,451,895) M. A. PURSEL CALCULATING DEVICE Filed Nov. 10 1921 mm: Mnnsmou fl/veL E PORSEL f/omey l uzented Apr. 17, 1923.

UNITED STATES MARSHALL ANGLE PURSEL, OF WEST HAVEN, CONNECTICUT.

CALCULATING DEVICE.

Application filed November 10,1921.

To all whom it may concern:

Be it known that I, MARSHALL ANGLE PURSEL, a citizen of the United States, residing at Vest Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful LIIHPI'OVE- ments in Calculatin Devices, of which the following is a specification.

This invention relates to calculating devices of a simple type adapted for use as a. tallying device in playing card games, such as pinochle, 500, etc., by adding the score, melds, bids, tricks, or the like, and mechani cally registering the score. Objects of the invention are to save mistakes in addition, in keeping the score; to save the time usually taken to record the score; and, to provide a reliable tally of the score at all times.

These being among the objects of the present invention, the same consists of certain features of construction and combinations of parts to be hereinafter described, and then claimed with reference to the accompanying drawin s illustrating a desirable embodiment of the invention, and in which Fig. 1 is a plan view, showing all parts,

set to 0 (zero) and F i 2 is a transverse section on the line A-- Fig. 1.

Referring to the drawings, a base or flat board B is provided, which may be of any suitable shape. Mounted on a ivotQon the base is an indicator P P his indicator is preferably duplex, that is to say, the pivot D is located midway of the length of the strip or bar forming the indicator so as to provide two oppositely-directed pointers P res ectivel The ase B bears two graduated series of numerals as shown, extending in a circle concentric with the pivot D. One of the series of numerals runs from 0 (zero) half way around the circle, and preferably the said series consists of numerals which are.

progressive multi les of 5, the numeral 5 being placed at the graduation next the 0 (zero). The second series of graduated numerals occupies the other half of the circle,

and consists of a repetition of the numerals in the other half, that is, the run from 5 up to 95, in progressive multip es of 5, the nu-- meral 95 of the second series being placed the next graduation awa from the 0 (zero) of the first series. It wi be seen, therefore, that the two series of numerals referred to count up to 200 in the complete circle. The

Serial No. 514,200.

two circularly-arranged series of numerals referred to are placed underneath the ointers P P so that on sweeping the pointers around the board, more or less, the extreme ends of the pointers, just inside of the circular series of numerals, may be set opposite any desired numeral of the two series. Each pointer P P is provided beyond its pointing extremity with a tooth P which is turned down towards the base B, the object of which will be explained later.

Mounted upon the pivot D so as to be upon the same axis as the indicator with its two pointers P P is a calculating-wheel A, which is preferably in the form of a flat circular disk of suitable material, such as celluloid, sheet metal, or the like. The calculating-wheel A is provided with two concentric series of numerals, each of which numerals is a multiple of the same factor which is used in the numerals on the base B, and the numerals of the said two series on the calculating-wheel A are graduated the same as the numerals on the base, so that an given numeral on the calculating-wheel X may be set opposite a certain numeral on the base. 0n the base the numerals in one half of the circle are repeated in the other half, but in the case of the calculating-wheel A the numerals run from 0 (zero) to 5, and so on, up to 195. Preferabl the numerals on the base progress in cloc wise direction, and the outer series of numerals on the calculating-wheel A progress counter-clockwise, while the inner series of numerals on the calculating-wheel A progress in clockwise direction, or in the same direction as the numerals on the base. The 0 (zero) marks of the numerals on the base and 'the two series of numerals on the calculatingwheel are placed normally 1n a location which is determined by a toothed wheel to be now described. a I

A- peripherally-toothed tallyingor totalizing-wheel C is mounted so as to turn on a pivot F on the base, said wheel being so laced that a tooth P of the pointers'P,

2 may be caused to engage with the teeth in either-direction of sweep of the pointers. This totalizing-wheel C may be made of any suitable material, or the same material as the calculating-wheel A. Preferably, the totalizing-wheel C has frictional contact with the base B so as not to be revolved too easily, it being desired .to revolve the same only through actuation by one of the pointer-teeth P Said totalizing-wheel C has one series of teeth C and another series of teeth G which alternate with the teeth C, but all of the teeth are arranged in a circle atthe periphery of the wheel C. When a totalizing-wheel C is used in connection with the specific indicator and calculating-wheel described, and in connection with the described system of numerals on the calculating-wheel and on the base B, it is desirable to have two alternating series of teeth 0 C on the totalizing-wheel, so that the totalizing-wheel may be caused to register, as in hundreds up to 2,000, said totalizing-wheel being actuated two teeth whenever the tooth of a pointer is caused to sweep past the totalizing-wheel. In the example shown, the series of teeth C are provided opposite them with numerals 1 to 10 inclusive, and the series of teeth C are pro vided with an inner series of numerals opposite them running from 11 to 20, the numeral 11 being op osite the tooth next following the 0 (zero tooth on the tallying-wheel. The numerals. on the tallying-wheel are caused to be set opposite a stationary indicator on the base B which is in the form of an arrow or the like.

The indicator comprising the two pointers P, P is preferably composed of a strip of springy metal, for the'purpose of enabling the indicator to be put under tension bythe pivot D. To do so the pivot is passed through the flat strip of the indicator in assembling the device, and the indicator thereby caused to be bowed or set by the pivot, the pivot being fixed in position by a cotter pin or the like E, which holds the indicator to its set. A washer E surrounds the pivot D between the perforated central portion of the indicator andthe calculatingwheel A. so 'as to raise the indicator a suitable distance away from the calculatingwheel and to permit each to revolve freely without interference by the other.

In order to prevent the indicator from being turned too freely and to hold the same at the position where it is set, the ends of the pointers are provided with teats G which are adapted to'register with and snap into, depressions G in the base B. If the elements G, G are employed, the depressions G will of course be positioned in line with the numerals on the base. For a similar purpose, the base B is preferably provided with a series of teats H, which are adapted to be received in depressions H in the calculating-wheel A. These teats H and depressions H will hold the calculatingwheel in the position to which it maybe turned and set.

Preferably surrounding the totalizingwheel C there is a raised portion or guard ridge Ion the base B. This raised portion I will serve to protect the totalizing-wheel C against accidental movement. Preferably,

will be one calculating device for home team,

and another calculating device for a visiting team. In the specific embodiment of the invention shown it will be seen that the calculating-wheel is graduated on its outer cir cumference in 40 units of 5, marked thereon counter-clockwise so as to permit addition of 200 in one rotation in a clockwise direction. The base B is graduated in such case outside the circumference of the calculating-wheel in the same number of units, with the multiples of 5 marked on the base in a clockwise direction.

To use the calculating device, as in a game, begin the game with all parts setto 0 (zero). To add the initial score'or meld (say 40) rotate the calculating-wheel A in a clockwise direction, bringing the graduation marked 40 thereon opposite the 0 (zero) on base B, and then the 0 (zero) or the arrow on calculating-wheel A will be opposite the graduation marked 40 on the base B. Next, rotate the indicator P P- from 0 (zero) adjacent the tallying-wheel in a clockwise direction to the 40 already set. If the next score or meld is 60, again rotate the calculating-wheel A clockwise so that 60 thereon coincides with the indicator set at 40, at which time the 0 (zero) or arrow on the calculating-wheel will be opposite the 100 mark on base B. Then, the two scores 40 and 60 have been automatically added. Now move the indicator P P clockwise to coincide with the 100 set off by the calculating-wheel A and proceed as before. The indicator P, 1 records at all times the total score in units of 5 (5 being the factor) up to 100. When the indicator has been moved far enough from the 0 (zero) on the base to indicate 100, 100 is automatically added by the engagement of a tooth of pointer P with one of the teeth of the totalizing-wheel C, which in this case happens to be a hundreds tally. This will advance the totalizing-wheel from 0 (zero) to 1, and thus register 100. The indicator moves the totalizing-wheel for a distance of two teeth every half rotation of the indicator. that is, every 100 points of revolution. In the embodiment of the invention shown it will be seen that the totalizingwheel C containing twenty-one teeth is graduated from 0 (zero) to 20, so that any score up to 2000 is registered by the device,

' which admirably adapts this calculator as a score-adding and registering device for use in obtaining the tally in certain card games.

To subtract a default, the secondary or inner series of numerals on the calculatingwheel A are used, the graduations thereof being numbered from 5 to 200 in a clockwise direction on said wheel. To demonstrate the operation, assume that the total score is 400. that is, the indicator P, P pointing to 0 (zero) at the point on the base adjacent the totalizing-wheel, and the latter reads 4 and the default is 150. Ihe calculating wheel A is rotated counter-clockwise until the graduation 150 in the inner series thereof coincides with the indicator at 400. The 0 (zero) arrow of calculating-wheelA will now be pointing to the numeral on the base B. The indicator is now moved counterclockwise to coincide with the 0 (zero) arrow on the calculating-wheel A and the numeral 50 on the base B, and in so doing, the teeth of the indicator P, P are meshed twice with the teeth of the t'otalizingor hundreds be discontinued at will in adding and in dicating a score, for simple melds or scores of 20, 50, 100, etc, can be readily added or subtracted by simply moving the indicator P P ahead or back these amounts, and then when a larger number like 185, etc. is to be added, the calculating-wheel A can again be employed.

It is obvious that a different system of numerals may be used throughout the device and other factors than 5 may be employed for the indicator and the calculatingwheel, and that the device may be otherwise modified as to its details without departing from the scope of the invention as defined in the appended claims, and I, therefore, do not limit myself to the precise construction and system of numerals described and shown.

What I claim as new is:

1. In a calculating device of the class described. the combination of a base, a resilient pointer pivoted thereon and provided with a carrying tooth, the outer end of said pointer having frictional contact with said base, and said base bearing a graduated series of numerals concentric with the pivot of the pointer, and which run from zero through progressive multiples of a factor one graduation from the zero, and arotatable, toothed, totalizing-wheel mounted on said base in position to permit the tooth of said pointer to engage its teeth, said wheel bearing a graduated series of numerals set opposite its teeth and which run, in the same direct-ion as the numerals on the base, from 1 up through progressive multiples thereof, said base having a stationary indicator for said totalizing wheel.

2. In a calculating device of the class described, the combination of a base, a pointer pivoted thereon and provided with a tooth, said base bearing a graduated series of numerals concentric with the pivot of the pointer, and which run from zero through progressive multiples of afactor one graduation. from the zero, and a rotatable, toothed, totalizing wheel mounted on said base in position to permit thetooth of said pointer to engage its teeth, said wheel bearing a graduated series of numerals set opposite its teeth and which run, in the same direction as the numerals on the base, from 1 up through progressive multiples thereof, said base having a stationary indicator for said totalizing wheel; with a calculating Wheel mounted on the base to rotate concentrically with said pointer and bearing two concentric series of numerals, whereof the numerals ofeach series are graduated the same as, and progress the same as, the numerals on the base, while the numerals of one series of said calculating wheel progress counter to the numerals of the other series.

. 3. In a calculating device of the class described, the combination of a base, an indicator pivoted thereon midway of its length and having two alined oppositely-extending pointers, each having a tooth, said base bearing two graduated series of numerals extending in a circlecconcentric with the pivot of said indicator, the numerals of one series in one-half of the circle running from zero through progressive multiples of a factor one graduation from the zero, and the numerals of the other series in the other half circle being a repetition thereof from a corresponding factor back to the zero, and a rotatable, toothed, totalizing wheel mounted on said base, in position to permit each tooth of said pointers to engage its teeth, there being one series of numerals on said wheel which are set opposite successive alternate teeth and another series of numerals thereon which are set opposite the successive intermediate teeth, the numerals of the two series on said wheel progressing in the same direction as the numerals on the base from 1 up through progressive multiples thereof.

4. In a, calculating device of the class described, a totalizing wheel provided with an odd number of peripheral, equi-distantly, spaced gear teeth and bearing opposite each tooth, except one. one of the numbers of one scribed, a base, an indicator having means at its Inidlen'gth for revolubly mounting it on said base, and consisting of a straight strip of springy material, in combination with means for bowing said indicator to give it a spring-set, the springy ends of said indicator forming oppositely extending pointers and bearing fri'ctionally on said base.

6. In a calculating device of the class described, the combination with a base, calculating means including several series of progresslve numbers, using for example, 5 as a factor, and multiples thereof, and a duplex 20 pointer the ends of which have frictional contact with said base, of a toothed hundreds totalizing wheel operable by each of the pointers to advance said wheel two teeth or a hundred points.

MARSHALL ANGLE PURSEL. 

